/*
=============================================
 Author:
 Student id:
 Description:
 Date:
=============================================
*/
#include <stdbool.h>
#include <stdio.h>

void task18(void) {
  printf("\n Output of task18:\n");

}

void task19(void) { 
  printf("\n Output of task19:\n"); 
}

void task20(void) { 
  printf("\n Output of task20:\n"); 
}

void task21(void) { 
  printf("\n Output of task21:\n"); 
}

void task22(void) { 
  printf("\n Output of task22:\n"); 
}

void task23(void) { 
  printf("\n Output of task23:\n"); 
}

int main() {

  task18();
  task19();
  task20();
  task21();
  task22();
  task23();

  return 0;
}